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ICS9248-107 - Frequency Generator & Integrated Buffers

Description

The ICS9248-107 is a main clock synthesizer chip for Pentium II based systems using Rambus Interface DRAMs.

This chip provides all the clocks required for such a system when used with a zero delay buffer such as the ICS9179-06.

Spread Spectrum may be enabled through I2C.

Features

  • 4 - CPUs @ 2.5V, up to 180MHz.
  • 3 - IOAPIC @ 2.5V.
  • 3 - 3V66MHz @ 3.3V.
  • 11 - PCIs @ 3.3V.
  • 1 - 48MHz, @ 3.3V fixed.
  • 1 - 24/48MHz, @ 3.3V Features:.
  • Up to 180MHz frequency support.
  • Use a zero delay buffer such as the ICS9179-06 to generate SDRAM clocks. Support power management: Power down Mode from I2C programming. Spread spectrum for EMI control ± 0.25% center spread). Uses external.

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Datasheet Details

Part number ICS9248-107
Manufacturer Integrated Circuit Systems
File Size 141.38 KB
Description Frequency Generator & Integrated Buffers
Datasheet download datasheet ICS9248-107 Datasheet

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Full PDF Text Transcription

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Integrated Circuit Systems, Inc. ICS9248-107 Frequency Timing Generator for PENTIUM II Systems Recommended Application: RCC chipset Output Features: • 4 - CPUs @ 2.5V, up to 180MHz. • 3 - IOAPIC @ 2.5V • 3 - 3V66MHz @ 3.3V. • 11 - PCIs @ 3.3V • 1 - 48MHz, @ 3.3V fixed • 1 - 24/48MHz, @ 3.3V Features: • Up to 180MHz frequency support • • • • • Use a zero delay buffer such as the ICS9179-06 to generate SDRAM clocks. Support power management: Power down Mode from I2C programming. Spread spectrum for EMI control ± 0.25% center spread). Uses external 14.
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